I think this keris and the other keris posted by blackinaz are from Java, but I'm not so sure about the Solo attribution because the sheath form is rather 'non-standard' gayaman.
Hey RhysMichael, I have a keris that could be a 'brother' of your keris, right down to the style of the gayaman sheath.
Notice the 'short' ganja in proportion to the blade. I have a hunch that these kerises come from the Northern or the Eastern coast of Java.